baber/WOPTO huggingface dataset:
Patent GB-726078-A (GB)
Title: Manufacture of indolines
IPC: C07D209/08
Filed: 1953-02-06
Abstract: The invention comprises Bz-carbamyloxy-indolines of the formula <FORM:0726078/IV (b)/1> wherein R represents a carbamyloxy residue and Alk stands for an alkyl residue, and their salts and quaternary compounds.  The carbamyloxy residue can be unsubstituted or be substituted by alkyl, alkenyl, alkylene, cycloalkyl, aryl or heterocyclic radicals.  The compounds are produced by converting the corresponding 6-hydroxy-indolines as such or as their salts or quaternary compounds directly or in stages (e.g. with the chlorocarbonic acid ester as an intermediate) into the 6-carbamyloxy-compounds.  Quaternation may also be effected after the carbamyloxy group is formed by reaction with, e.g., alkyl halides, alkyl sulphates or toluene sulphonates.  Salts with hydrohalic, sulphuric, nitric, phosphoric, thiocyanic, acetic, propionic, oxalic, malonic, succinic, malic, methane sulphonic, ethane sulphonic, hydroxyethane sulphonic, benzene sulphonic and toluene sulphonic acids and salts with therapeutically active acids are referred to. In an example (1) 1-methyl-6-(N-methylcarbamyloxy)-indoline is prepared by reacting 1-methyl-6-hydroxy-indoline with methyl isocyanate in the presence of triethylamine, and the product is converted to 1 : 1-dimethyl-6-(N-methylcarbamyloxy)-indolinium bromide.  Also prepared are (2) and (3) 1-methyl-6-(N : N-dimethylcarbamyloxy) - indoline and 1 : 1 - dimethyl - 6 - (N : N - dimethyl - carbamyloxy) - indolinium bromide, in (3) the chlorocarbonic acid ester being formed as an intermediate; (4) 1-methyl-6 - (N : N - diphenyl - carbamyloxy) - indoline by reacting 1-methyl-6-hydroxy-indoline with phosgene and treating the chlorocarbonic acid ester produced with diphenylamine. 1-Methyl-6-hydroxy-indoline is prepared by heating m-acetyl anisidine with sodium in xylene, reacting the product with dimethyl sulphate, evaporating the xylene and treating the product with aqueous potassium hydroxide.  The N-methyl-m-anisidine obtained is treated with chloracetyl chloride to give N-methylchloracetyl-m-anisidine, which is heated with aluminium chloride to give 1-methyl-6-hydroxyoxindole, reduction of which with lithium aluminium hydride gives 1-methyl-6-hydroxyindoline.
Patent GB-208662-A (GB)
Title: Improved method of and means for washing casks and the like
IPC: B08B9/08
Filed: 1923-02-06
Abstract: 208,662. Gregory, H. S. Feb. 6, 1923. Cleansing casks. - An apparatus for washing casks &c. comprises a low pressure receptacle in which the washing fluid is received from the heating apparatus, a pump, a delivery main 5, Figs. 2 and 3 for delivering the fluid to the casks &c., and a return main 9 by which surplus fluid not used in washing the casks is returned through a pressure reducing valve to the low pressure receptacle. The casks rest on stillions 33 and corresponding with each cask there is a branch pipe 6 leading from the main 5 through a three-way cock 7, pipe 14, stop-valve 15 and pipe 27 to a rotary nozzle 13 operated by cogs 24, 23 and shaft 22 from a driven shaft 12. The cock 7 communicates normally to a return branch pipe 8, but is connected at intervals with the nozzle by a cam operating an arm 21 by means of a rod 19, the arrangement being such that the valve dwells in the open position while the nozzle makes a predetermined number of revolutions. When the cask is not on the stillions a stop 35 is not depressed and the valve 15 is held closed by a spring 38 and the washing fluid does not enter the nozzle but returns by a by-pass 16 and check valve 17 to the. return main. When the cask is placed on the stillions the stop 35 is depressed and the valve 15 opened. The fluid after being used passes from a draining well 29 into a suitable drain. A thermostat is used with the low pressure receptacle and the nozzle may be rotated by the pressure of the washing fiuid.
Patent GB-896911-A (GB)
Title: Method of preparing nitro-2,3-dihalo-1,2,3,4-tetrahydroanthraquinone and mononitroanthraquinones
IPC: C07C201/16
Filed: 1959-02-02
Abstract: A nitro-2,3-dihalo-1,2,3,4-tetrahydro-anthraquinone is obtained by adding nitric acid to a solution of 2,3-dihalo-1,2,3,4-tetrahydroanthraquinone in sulphuric acid of above 93% concentration while keeping the temperature below 60 DEG C. The halo substituent may be chlorine, bromine, or iodine.  The nitro-dihalo compound may be heated with aqueous caustic alkali so as to obtain by dehydrohalogenation the 1- or 2-nitroanthraquinones. The dihalo-tetrahydro compound may be obtained by subjecting a 1,4,4a,9a-tetrahydroanthraquinone, in aqueous solution adjusted to a pH of 4-8, to oxidation with gaseous oxygen at 85 DEG C.-100 DEG C., separating the resulting 1,4-dihydroanthraquinone, suspending it in a solvent inert to halogenation, and reacting it with chlorine, bromine, or iodine, or a chlorinating agent such as sulphuryl chloride, to form a 2, 3 - dihalo - 1,2,3,4 - tetrahydroanthraquinone.  As solvent inert to halogenation there may be used carbon tetrachloride chloroform, nitrobenzene, chlorobenzene, or ethylene chloride.  The halogenation may be effected at 0 DEG C. or below.  The dihalo compound may be isolated and then redissolved in sulphuric acid for the nitration or it may be transferred directly by extraction from the organic solvent with the acid.  Nitration occurs in the 5- and 6-positions.  The nitrated product may be isolated by drowning in water and filtering the product, or the nitration mixture may be extracted with nitrobenzene and the extract may be used directly for the dehydrohalogenation.  If the nitrated product is isolated it may be separated into the individual isomers by recrystallisation or other procedures.  The 5-and 6 - nitro - 2, 3 - dichloro - 1, 2, 3, 4 - tetrahydroanthraquinones, and the corresponding dibromo compounds may thus be isolated.  For the dehydrohalogenation step the caustic alkali used may be an alkali or alkaline earth metal hydroxide, preferably caustic soda or potash, and the temperature may be about 50 DEG C.  If the nitro isomers are separated before dehalogenation the product is the 1- or the 2-nitro-anthraquinone, but if a mixture of the nitro isomers is used, separation after dehydrohalogenation may be effected by crystallisation or by extraction with sulphuric acid followed by dilution of the solution and fractional separation. The 1,4,4a,9a-tetrahydroanthraquinones used as starting materials may be obtained by reacting dienes with naphthoquinone. Specified dienes are butadiene and the 2-chloro-3-methyl-, 2,3-dimethoxy-, 2,3-dimethyl, 1-phenyl-, 1,4-diphenyl-, 2-chloro, 2-methyl-, 2-butyl-, 2-heptyl-, 2-phenyl-, 2-acetoxy-, 2-ethoxy-, and 2-bromoderivatives of butadiene, and 3-chloro-1,3-pentadiene, -hexadiene, and -octadiene, and cyclopentadiene.  Specification 873,874 and U.S.A.  Specification 2,642,445 are referred to.
Patent GB-1479128-A (GB)
Title: Analytical balance
IPC: G01G1/28
Filed: 1976-01-29
Abstract: 1479128 Balance METTLER INSTRUMENTE AG 29 Jan 1976 [15 Aug 1975] 03586/76 Heading G1W A balance includes a support 46 for elongate substitution weights 40, each weight 40 when resting on support 46 being inclined to the horizontal and resting against an abutment 52 of the support to determine its longitudinal position. Support 46 is suspended from balance beam 14 by crossed flexive strips (32), Fig. 1 (not shown), and bands 36, and pivotally supports a weighpan at member 38. Each weight, which may be cylindrical or of square cross-section engages a pair of notches is support 46 so as to lie at 10 to 20 degrees to the horizontal and at 100 to 120 degrees to abutment 46. A switching mechanism includes manually rotatable shafts 54, 54', cams 56, 56' carried by the shafts and lifting levers 62 controlled by the cams and having notched ends 64 which engage grooves 42 in the weights and lift the weights into notches 72, 72' on a fixed frame of the balance. One shaft may control weights of 80, 40, 20 and 10 grams and the other 4, 2, 2 and 1 grams.
Patent GB-838171-A (GB)
Title: Air spring and mounting
IPC: F16F9/05
Filed: 1958-02-04
Abstract: 838,171. Pneumatic springs. FIRESTONE TIRE & RUBBER CO. Feb. 4, 1958 [Feb. 11, 1957], No. 3597/58. Class 108(3) In an air spring a convolution 10 is attached by beads 21, 22 to an air reservoir 35 and a pedestal member 40 respectively. To provide a soft ride under normal conditions the pedestal 40 diminishes in diameter to a point a and thereafter increases in diameter to prevent bottoming of the spring under the influence of large shocks.
Patent GB-895851-A (GB)
Title: Flight control mechanisms for aircraft
Inventor: SURTEES HOWARD
IPC: B64C13/24
Filed: 1958-02-04
Abstract: 895,851. Controlling aircraft. VICKERS AIRCRAFT HOLDINGS Ltd. Jan. 21. 1959 [Feb. 4, 1958], No. 3626/58. Class 4. Aircraft control apparatus comprises a flight control member, a flight control organ e.g. an elevator, means for representing the force applied to the control member as a hydraulic pressure, a device for producing an output representing the difference between said pressure and a force proportional to the acceleration of the aircraft at a predetermined point thereof, and a servomechanism applying a force to the control member under the control of said device. The acceleration is a linear acceleration through the aircraft longitudinal axis and normal to the lateral axis, or acceleration due to pitching or rolling motion if the predetermined point is not at the aircraft centre of gravity. In the embodiment described, a pilot's control column 10 is pivoted at 12 to a link 11 connected to the elevators, and is pivoted at 101 to the rod 13 of a piston 14 in a cylinder 15 acting as a forcepressure transducer. The two ends of the cylinder are connected by conduits 16, 17, to two chambers 18, 19 separated by a spring balanced normal acceleration responsive mass 20 connected by links 21, 22 to the valve 23 controlling the connection of fluid pressure and return conduits 231, 232 to the chambers of a jack 25. The rod 26 of the piston 24 of the jack is pivoted at 27 to a lever 28 pivoted to the airframe at one end 281 and supporting cylinder 15 at its other end. Also connected to rod 13 is the output link 29 of an artificial feel unit adapted to urge the control column 10 to a datum position by a force increasing with the displacement of control column 10 and variable with airspeed. Normal acceleration of the aircraft displaces mass 20, which admits fluid under pressue to one side of piston 24, and thus sets up a force on the control column 10. If resisted by the pilot, this force increases until the pressure differential produced in transducer 14, 15, and transmitted to chambers 18, 19, is sufficient to recentre mass 20 and valve 23. Thus the control column force required per g of normal acceleration is constant. This relationship is, however, modified by the centering force applied by the artificial feel unit through link 29. If the pilot flies " hands off," displacement of mass 20 and operation of the servomotor displaces the control column, until the force applied by link 29 to the transducer 14, 15 recentres mass 20, so that the elevators are operated in the sense to reduce the normal acceleration. To counteract time lags in operation of the system, the linkage 21, 22 may be such as to produce an output displacement dependent on the input displacement and its rate of change, or the mass 20 may be located well ahead of the centre of gravity of the aircraft.
Patent GB-539979-A (GB)
Title: Improvements in radio receiving sets
IPC: H01Q1/24
Filed: 1940-02-27
Abstract: 539,979. Wireless receiving sets. McDONALD, E. F. Feb. 27, 1940, Nos. 3627, 3628 and 3629 Convention dates, May 4, 1939, June 26, 1939 and Oct. 6, 1939. [Class 40 (v)] A receiver for operation within a shielding structure such as a train, car &c. has a loop aerial electrically connected to the set and provided with means for readily and removably attaching it to the surface of a window or other non-shielding wall area of the structure. As shown in Fig. 2 a loop aerial 7 is mounted between a plate 8 and a plate 11 which forms the back panel of receiver casing 1 and which is normally held in position by a groove 13 and spring catch not shown. The aerial is connected to the set by a lead 18 normally folded up in the casing. When used in, for example, a railway train, Fig. 1, the rear panel is removed, as by a hand hole 15 and the aerial is mounted on the window pane by vacuum cups 19. In a modification, Fig. 5, not shown, the aerial is extra to one permanently mounted in the cabinet and is connected to the set by a jack switch which disconnects the internal aerial as the external one is connected. Modifications are also described in which the vacuum cups are mounted on hinges, and arms to allow the aerial to be mounted at an angle to the window. In a further modification, the aerial is mounted between two sheets of transparent material so as not to obscure the window unnecessarily. 1
Patent GB-1475610-A (GB)
Title: Steering system
IPC: B62D5/097
Filed: 1975-01-28
Abstract: 1475610 Power steering TRW Inc 28 Jan 1975 [7 Feb 1974] 3675/75 Heading B7H In a steering system for a large vehicle in which a substantial flow of hydraulic fluid is required to effect steering of the vehicle, a fluid controller 14 includes a valve spool 108, Fig. 2, which, in use, is moved axially on actuation of a steering input shaft 90 so as to direct a relatively small quantity of fluid through a metering section 106 to the piston-rod end of one of double-acting steering cylinders 42, 56, Fig. 1, and to direct a relatively large quantity of fluid to the cylinder-head end of the other of steering cylinders 42, 56, the return fllow from said one of said cylinders 42, 56 passing through a one-way valve 84 or 86 so as to join the return flow from the said other of said cylinders 42, 56 and to return through the fluid controller 14 to a reservoir 22. As illustrated, the metering section 106 of the fluid controller 14 comprises intermeshing inner and outer gears 132, 130 associated with a commutator valve mechanism 134. The inner gear 132 of the metering section is coupled to the valve spool 108 and to the steering input shaft 90 through a wobble shaft 136 and a torsion rod 150. The valve spool 108 provides a closed-centre type valve which allows manual steering to be effected by rotation of the input shaft 90 when the fluid supply pump 10, Fig. 1, of the system is inoperative. In the condition of the system shown in Fig. 1, the fluid controller 14 directs a metered fluid quantity Q from a port 30 to the piston-rod end of steering cylinder 42, and directs a non- metered fluid quantity 2Q from a port 36 to the cylinder-head end of the steering cylinder 56. In the modified steering system of Figs. 5 and 6 (not shown), the fluid controller (200) includes a valve spool (203a) providing an opencentre type valve. Fig. 5 (not shown), depicts the system in a condition in which the controller (200) directs a fluid quantity (Q) to the pistonrod end of steering cylinder (A) and a fluid quantity (3Q) to the cylinder-head end of steering cylinder (B), and receives a quantity (Q) from the piston-rod end of cylinder (B) which quantity (Q) is subsequently metered in a metering section (202) of the fluid controller.
Patent GB-728536-A (GB)
Title: Improvements in or relating to preparation of cellulose acetate sorbate
IPC: C08B3/16
Filed: 1953-02-10
Abstract: Cellulose acetate sorbate having a total acyl degree of substitution (D.S.) of 2.2-2.9, the sorboyl D.S. being 0.01-0.35, is obtained by completely acylating cellulose, in the presence of a substantial amount of methylene chloride and a minimum effective catalytic amount of sulphuric acid, with an anhydride mixture of acetic and sorbic acids in which the sorbic acid amounts to 0.0023 to 0.13 mole. fraction of the organic acids and the anhydride value of the mixture amounts to at least 3 moles. anhydride per anhydroglucose unit, and partially hydrolysing the completely acylated cellulose by heating on the average at 50 DEG -55 DEG  C., but not exceeding 65 DEG  C., in the presence of 5-15 per cent (based on the weight of the cellulose) of either p-toluene sulphonic acid, benzene sulphonic acid, methane- or ethane-sulphonic acid or methionic acid as hydrolysis catalyst and with no more sulphuric acid than that used in the esterification step and in the presence of aqueous acetic acid containing 5-30 per cent of water.  The sulphuric acid used is preferably below 1.5 per cent based on the weight of the cellulose.  The acylation may take place at 20-60 DEG  C.  The products obtained are stable against degradation by heat.  They may be rendered insoluble in organic solvents by subjecting them to the action of actinic light or by heating them in the presence of peroxides or other oxidizing agents. Such treatment appears to effect polymerization and cross-linking of the molecules.  To avoid premature cross-linking, hydroquinone, catechol, pyrogallol, t-butyl catechol, di-t-butyl hydroquinone, hydroquinone benzyl ether, a -naphthylamine, diphenylamine, phenyl-b -naphthylamine or other anti-oxidant may be added to the solution of the cellulose ester during the hydrolysis step.  The anhydride mixture used for the esterification may be a mixture of acetic acid and sorbic anhydride, acetic anhydride and sorbic acid, or a mixed anhydride. The cellulose acetate sorbate may be used for making filaments, films, lacquers and moulded articles.  Bristle-like filaments for use in paint brushes may be produced.  Benzoyl peroxide may be incorporated in the solution or composition from which filaments, films or lacquers are formed, or it may be incorporated in a moulding powder before or after grinding.  Filaments or films may be insolubilized by heating them in boiling water, or an aqueous solution of acetone, alcohol or other organic liquid in the presence of benzoyl peroxide, hydrogen peroxide, potassium persulphate or other oxidizing agent, or in presence of actinic light.  The cellulose acetate sorbate may be used in printing inks or in laminated structures comprising paper, wood, metals, glass, leather or textile fibres or fabrics.  It may be used for coating wire and for impregnating porous materials.
Patent GB-633271-A (GB)
Title: Thread-trimming mechanisms for sewing machines
IPC: D05B65/00
Filed: 1948-02-11
Abstract: 633,271. Sewing machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Feb. 11, 1948, No. 3999. [Class 112] Thread cutters. In a group-stitch sewing machine with a work-clamp having an upper foot pivoted for tilting and carrying thread cutting and nipping device, the actuating mechanism for the device includes a ball joint with its centre in line with the pivot axis, of the clamp foot when the device is closed, so that any movement of the clamp cannot cause it to release the thread end prematurely. - In the embodiment shown the device comprises an upper nipping blade and a lower cutting blade carried by a rock-shaft 44 in the clamp foot 31 and working between an upper part of the clamp foot and a hard removable insert in the lower part of the foot; the device is actuated by a rod 52 of similar shape to the clamp arm 35, an arm 49 pivoted on the clamp foot 31 and a link 48, the connection between the rod and arm being a ball-joint lying on the axis of the pivot-pins 33 carrying the clamp feet so that movement of the feet does not affect the device. The rod 52 is pivoted to the upper end of a lever 53 having a return spring 56 which holds it against a buffer 58 on the clamp so arranged that opening and closing of the clamp do not cause longitudinal movement of the rod 52 relative to the clamp foot ; the lower end of the lever 53 is engaged by a lever 66 having pin-and-slot connection with an arm 63 on a rock-shaft 60 which is actuated twice in each cycle of operation of the machine. The first operation, to return the needle-thread end after stitching has commenced, is produced by a cam 62 on the underside of the feed-wheel 21 engaging an arm 61 on the shaft 60 to produce slow opening of the device and sudden release for closing by the spring 56. The second operation, to trim the thread and hold the end for starting the next cycle, is performed after sewing, by a connecting rod 24 from a crank on a shaft which makes one revolution before the machine stops ; this rod 24 is connected to a spring pivoted pawl 26 on an arm pivoted on the feed-wheel shaft, which engages a tooth on the feed-wheel 21 to move it rapidly to its initial position. The pawl carries a pin 73 which, on its movement to the left, engages a depending wall 71 on an arm 70 on the shaft 60 until the wall snaps back behind it ; on the return movement of the rod 24 the pawl runs along the outside of the wall 71, being deflected by the wall against the action of its spring. Specifications 4417/08, 146,587, 335,092, [all in Class 112], and 378,790 are referred to.
Patent GB-224570-A (GB)
Title: Improvements in or relating to multi color kinematograph and other films
IPC: G03B33/00
Filed: 1923-05-18
Abstract: 224,570. Thornton, J. E. May 18, 1923. Addition to 224,569. Kinemtatograph pictucre films; colour photography. - In a four or three colour, built-up, kinematograph film or other picture, of the kind described in the parent Specification, the partial colour images are produced photographically in pairs upon the two thin component film strips, without superimposition in adjacent areas of dots, lines, or mosaic pattern in the sensitive colloid layers. The film material on which kinematograph images are printed is of half standard thickness, and comprises a cellulose base carrying a dot, line or mosaic pattern of coloured sensitized colloid, the colours being arranged in close juxtaposition in the same colloid layer. It may be reinforced by a removable backing.
Patent GB-989887-A (GB)
Title: Improvements in tape measures
IPC: G01B3/10
Filed: 1962-02-02
Abstract: 989,887. Tape measures. J. G. ROE. Feb. 2, 1962, No. 4071/62. Heading G1M. A tape measure unit comprises a flexible measuring tape 2, a plastics casing shell 6 a rotatable plastics cover plate 8 mating to form a casing 4 having a slot through which the tape extends, the cover plate 8 having a collar extending into the casing shell 6, means connecting the inner end of the tape to the collar, an annular hub 26 rigid with the collar, and stud means 32 extending through a wall of the shell 4, whereby the cover plate is rotatably mounted on the casing shell 4, the cover plate 8 having raised finger ledge means 42. Metal bearing parts may be provided on the hub 26 and shell 4.
Patent GB-794382-A (GB)
Title: Purification of glycols
Inventor: O'NEILL WILLIAM ALEXANDER
Filed: 1956-02-10
Abstract: Glycols which have been subjected to a thermal treatment, e.g glycols recovered after the manufacture of polymethylene terephthalates, are purified by heating the impure glycol with a relatively non-volatile acid, such as sulphuric or phosphoric acid, or with a salt having an acid action, such as zinc chloride, and then submitting the treated glycol to distillation, whereupon the purified glycol is obtained as distillate.  The process is application to glycols of the series HO(CH2)nOH, where n=2 to 10 inclusive.  In an example, ethylene glycol, obtained as a by-product during the polycondensation of bis (beta-hydroxyethyl) terephthalate, having a colour of 120 Hazen units, was warmed to 60 DEG  C. with 0.2 per cent by weight of concentrated sulphuric acid for 15 minutes.  Sodium carbonate was added to neutralize the sulphuric acid, and the resulting product was distilled.  The ethylene glycol obtained as distillate had a colour of 20 Hazen units.  The purification of 1 : 4 butanediol is referred to.